Note 10 - Net Income Per Common Share - Reconciliation of the Earnings Per Share Computations (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Net income	$ 121,775	$ 976,604	$ 1,117,185	$ 3,573,294
Basic – weighted shares outstanding (in shares)	9,474,363	9,431,134	9,475,967	9,432,684
Weighted shares assumed upon exercise of stock options and settlement of restricted stock units (in shares)	65,403	584,540	210,679	386,536
Diluted – weighted shares outstanding (in shares)	9,539,766	10,015,674	9,686,646	9,819,220
Basic net income per share: (in dollars per share)	$ 0.01	$ 0.1	$ 0.12	$ 0.38
Diluted net income per share: (in dollars per share)	$ 0.01	$ 0.1	$ 0.12	$ 0.36